A/N: This is my first fan fiction it's very short and humble . Constructive criticism is very welcome. Thank you for taking the time to read it.

C&C23

Disclaimer: I do not own Life with Derek.

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He knew it was only about time. The scene was set. It was time to play the rolls.

She was always so predictable; Casey would soon swing open his bedroom door and start to rant, and Derek absolutely loved it.

Actually he craved it. The way her eyes would suddenly ignite with blue flames. The blood would rise to color her cheeks a delicate rosy pink. Her hair that she always kept too neat would cascade in shining waves over her eyes and shoulders, at that point he would always have to remind himself not to touch her. Then she would put up her fighting stance. Head up, chin tilted and shoulders back. Sexy beyond compare.

He could imagine it now "I am Casey hear me roar."

Derek adored the "fights" they shared. In reality that's what Casey needed. She was no damsel in distress. She craved a challenge in life and if Casey wanted a challenge, a challenge is what Derek would be. He would be her adversary, if that's what it took to always be on her mind.

He wanted to be part of her world, and if he had to play the role of villain, so be it.

He teased her, bossed her around, found any way to annoy her and even got her in trouble. He would stay up late just thinking up elaborate pranks that he could pull on her.

He hadn't realized when it had happened. At first it was all just a game he had played; tormenting her. He loved to push and pull Casey from her prim closed up shell. Only he knew her real self. Only he had a glimpse of the confident, in your face girl she refused to acknowledge she really was. Time had passed and without him knowing, she had somehow become something more.

She had become the reason he would get up in the mornings. When she smiled it felt like he was getting kicked in the stomach, all the breath was knocked out of him. If Casey was near, his heart would start to race, it felt like it was going to shoot out of his chest. The jealousy was bad too, he had to restrain himself from punching any guy who even looked at Casey. Sport team differences weren't the only reason he liked playing pranks on her football boyfriend. She was taking him over.

And he hated it.

He had NEVER felt like this about any of the many girls in his life, and It now had to be his step-sister?!

Derek was sure someone up there was laughing at him.

He was at a stand still. He couldn't erase the feelings he now had for Casey, and because of the family situation he couldn't let anyone, especially Casey, know about how he felt.

So he was now royally fucked.

He needed to find a way to get away from her, before it was too late.

"De-rek!" Casey yelled as she busted into his room.

He smirked. Maybe after this.

Show time!

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So how do you like it? Should I go on? Maybe throw in a steamy fight? Please tell me what you think3

Much love C&C23